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Old 2nd November 2013, 08:30 PM   #1
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Join Date: Jun 2011
Location: Windham, VT
Default re-use PS from DVD player

Please excuse if the question seems too noob ... I am curious ...

I have harvested the power supply from an old HK DVD player - it appears to have multiple voltages off a ribbon cable (+5 -5 +14 -14 +5 +5 +3V3 ) ...I don't know what '3V3' means. I am assuming this is a regulated power supply - I can read 1 regulator as LM317T -- need a magnifying glass to read the other 2)

Assuming the PS works, is it possible to use this as a reliable regulated 5V PS by tapping one of the outputs and ground ? Not sure how to figure the amperage rating (I would need about 1 amp).

Or should I simply get a 5V 1A wall transformer for a whopping $10 ?

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Old 2nd November 2013, 11:35 PM   #2
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JonSnell Electronic's Avatar
Join Date: Dec 2012
Location: The Jurassic Coast, England. GB
3v3 means 3.3volts, same as 1R0 means 1.0 ohm
I cannot comment on your other question, sorry.
$10 seems a fair price.
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Old 3rd November 2013, 11:08 AM   #3
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Location: Windham, VT
Yes - I was trying to be facetious about the $10

Thx for the translation --
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Old 6th November 2013, 08:23 PM   #4
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Sodacose's Avatar
Join Date: Feb 2006
Location: mke, wi
You could cobble together something, probably. Not sure about the 1A though (based on the slim size and low cost of most DVD players). I'd salvage the transformer and LM317t at least.
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Old 9th November 2013, 01:04 AM   #5
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Location: Windham, VT
THX - Maybe I will post a pic
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